| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 76032 | Microporous and Mesoporous Materials | 2009 | 8 Pages |
Abstract
The effect of the Si/Al ratio on the synthesis of zeolite MEL and their influence in the phase transitions that results has been studied. Depending on the Al content tetragonal (I-4m2) or MFI intergrowth have been observed. In samples with high Al content the formation of a new orthorhombic (Imm2) phase is proposed. Comparison of the experimentally determined powder X-ray data and the theoretically predicted powder X-ray data generated by using the models obtained by density functional theory (DFT) in the tetragonal and orthorhombic crystal systems of the zeolite with MEL structure has been carried out.
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Authors
Gema Gonzalez, Maria E. Gomes, Gerardo Vitale, German R. Castro,